JBL S4HC - Manual (Page 22)

22
S YMPTOM P ROBABLE C AUSE S OLUTION
Bass is very weak • Subwoofers are wired out • Make sure that positive terminals on the
of phase subwoofers go to the positive terminals
on the amplifiers (red) and do the same
for the negatives.
• Subwoofers have not • Experiment with different locations.
been placed optimally
Poor or smeared imaging • Poor room acoustics • Use absorptive materials to minimize
early reflections.
• Aim speakers at listening area.
• Poor program source • Check another program source.
• Improper polarity • Check polarity of wire connections.
Indistinct dialogue • Slap echoes • Add absorption or diffusion materials.
• Miscalibration of center • Check output levels of surround processor.
channel output level
Uneven surround coverage • Poor speaker placement, • Place surrounds according to THX
strong reflections specifications.
• Add absorption and/or diffusion materials.
• Excessive absorption near • Remove absorptive material to provide
surrounds surround reflections.
T
ROUBLESHOOTING